What tread patterns tell you
The pattern on your tire’s tread isn’t just for looks. It’s designed to channel water away, keep noise down, and make sure the rubber stays in contact with the road. Some patterns are designed to improve grip in the rain or keep the car stable at high speeds. The blocky, deep treads on all-terrain tires are great for dirt roads but can be noisy on the highway. Others are designed for low rolling resistance to help you save on gas, though you might give up a little bit of grip. It’s a trade-off: do you want a quiet, smooth ride for your commute, or aggressive traction for weekend adventures?
Rubber, warranties, and how long they’ll last
How long a tire lasts comes down to the rubber it’s made of. Harder rubber compounds last a lot longer but might not grip as well. Softer rubber gives you fantastic traction but wears down much more quickly. A good clue is the mileage warranty that manufacturers offer (usually somewhere between 40,000 and 80,000 miles). It gives you a general idea of what to expect. But take it with a grain of salt—your driving habits and keeping them properly inflated will make the biggest difference in the real world. It’s always a good idea to read a few reviews from other drivers, too.
Don’t forget to check the tire’s age
An old tire is an unsafe tire, even if it looks brand new. Rubber breaks down over time. On the sidewall, find the DOT code. The last four numbers are what you need—they tell you the week and year it was made (so, “3519” means the 35th week of 2019). As a rule of thumb, you should think about replacing tires after six years, and definitely by ten, no matter how much tread is left. Before you buy, always give them a quick inspection for any cracks, bulges, or weird wear patterns.
